Duplication behaviour when editing mails from applemail.

Duplication behaviour when editing mails from applemail.

Greetings,

I recently bought a plugin pack for applemail called Mail-Tags. Basicly this allows me to create a ticklerfolder item with automated script or send options. I noticed that when I tag a mail it succesfully adds the metadata/script but apparantly creates a duplicate instead of removing the old one. At first It doesn't show the duplicates but after half a hour or so the dupes flow back in to applemail.

Is there anyway to circumvent/mitigate this behaviour by using a filter or changing the folders IMAP settings or should I have to contact the plugin developer? Thank you for reading my questions.

Best regards,